package cn.tedu.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo01 {
    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        /*
        1.加载数据库驱动；
        2.创建数据库连接对象；
        3.创建SQL语句执行对象：
        4.执行SQL语句
        5.断开数据库连接；
         */
        //1.1.加载数据库驱动；
        Class.forName("com.mysql.cj.jdbc.Driver");
        //2.创建数据库连接对象
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?" +
                        "characterEncoding=utf8&" +
                        "useSSL=false&serverTimezone=Asia/Shanghai&" +
                        "rewriteBatchedStatements=true",
                "root",
                "root"
        );
        //3.创建SQL语句执行对象
        Statement statement = connection.createStatement();

        //sql = "create table userinfo(username varchar(20), password char(10), nickname varchar(20), age int)";
        //4.执行SQL语句
        //接受用户数据
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入账号: ");
        String username = sc.nextLine();
        System.out.println("请输入密码: ");
        String password = sc.nextLine();
        System.out.println("请输入昵称: ");
        String nickname = sc.nextLine();
        System.out.println("请输入age: ");
        String age = sc.nextLine();

        //字符串拼接方式执行SQL, "+变量名+", 将变量的值嵌入到SQL语句中;
        String sql = "INSERT INTO userinfo(username, password, nickname, age)" +
                "VALUES('"+username+"','"+password+"','"+nickname+"',"+age+")";
        int i = statement.executeUpdate(sql);
        //5.断开数据库连接
        connection.close();














    }
}
